<!doctype html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <link rel="icon" href="icon.png">
  <link rel="apple-touch-icon" href="/icon.png">
  <link rel="stylesheet" href="style.css">
  <link rel="manifest" href="manifest.json">

  <link id="flipper-theme-import" rel="stylesheet">

  <title>Flipper</title>
  <script>
    window.flipperConfig = {
      theme: 'light',
      entryPoint: 'flipper-ui-browser/src/index-fast-refresh.bundle?platform=web&dev=true&minify=false',
      debug: true,
    }
  </script>
  <style>
    #loading {
      -webkit-app-region: drag;
      z-index: 999999;
      position: absolute;
      top: 0;
      left: 0;
      bottom: 0;
      right: 0;
      padding: 50px;
      overflow: auto;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: #525252;
      text-align: center;
    }

  </style>
</head>

<body>
  <div id="root">
    <div id="loading">
      Connecting...
    </div>
  </div>

  <script>
      (async function () {
        // Line below needed to make Metro work. Alternatives could be considered.
        window.global = window;
        let suppressErrors = false;
        let connected = false;

        const params = new URL(location.href).searchParams;
        let token = params.get('token');
        if (!token) {
          const manifestResponse = await fetch('manifest.json');
          const manifest = await manifestResponse.json();
          token = manifest.token;
        }

        const socket = new WebSocket(`ws://${location.host}?token=${token}`);
        window.devSocket = socket;

        socket.addEventListener('message', ({ data: dataRaw }) => {
          const message = JSON.parse(dataRaw.toString())

          if (typeof message.event === 'string') {
            switch (message.event) {
              case 'hasErrors': {
                openError(message.payload);
                suppressErrors = true;
                break;
              }
              case 'plugins-source-updated': {
                window.postMessage({
                  type: 'plugins-source-updated',
                  data: message.payload
                })
                break;
              }
            }
          }
        })

        socket.addEventListener('error', (e) => {
          if (!connected) {
            openError('Socket failed to connect. Is the server running? Have you provided a valid authentication token?');
          }
          else {
            openError('Socket failed with error.');
          }

          suppressErrors = true;
        });

        socket.addEventListener('open', () => {
          connected = true;
        })

        function openError(text) {
          if (suppressErrors) {
            return;
          }

          const box = document.getElementById('loading');
          if (box) {
            box.textContent = text;
          }
        }
        window.flipperShowError = openError;

        // load correct theme (n.b. this doesn't handle system value specifically, will assume light in such cases)
        try {
          if (window.flipperConfig.theme === 'dark') {
            document.getElementById('flipper-theme-import').href = "themes/dark.css";
          } else {
            document.getElementById('flipper-theme-import').href = "themes/light.css";
          }
        } catch (e) {
          console.error("Failed to initialize theme", e);
          document.getElementById('flipper-theme-import').href = "themes/light.css";
        }

        function init() {
          const script = document.createElement('script');
          script.src = window.flipperConfig.entryPoint;

          script.onerror = (e) => {
            openError('Failed to load entry point. Check Chrome console for more info.');
          };

          document.body.appendChild(script);
        }

        if ('serviceWorker' in navigator) {
          navigator.serviceWorker
            .register('/service-worker.js')
            .then(() => {
              console.log('Flipper Service Worker has been registered');
            })
            .catch((e) => {
              console.error('Flipper failed to register Service Worker', e);
            });
        }

        window.addEventListener('beforeinstallprompt', (e) => {
          console.log('Flipper PWA before install prompt with event', e);
          // Prevent Chrome 67 and earlier from automatically showing the prompt.
          e.preventDefault();
          // Stash the event so it can be triggered later.
          global.PWAppInstallationEvent = e;
        });

        init();
      })();
  </script>
</body>

</html>
